123 lines
2.6 KiB
C
123 lines
2.6 KiB
C
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// Copyright (c) 2008 GeometryFactory Sarl (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org).
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/GraphicsView/include/CGAL/Qt/StreamLinesGraphicsItem.h $
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// $Id: StreamLinesGraphicsItem.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Andreas Fabri <Andreas.Fabri@geometryfactory.com>
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// Laurent Rineau <Laurent.Rineau@geometryfactory.com>
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#ifndef CGAL_QT_STREAM_LINES_GRAPHICS_ITEM_H
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#define CGAL_QT_STREAM_LINES_GRAPHICS_ITEM_H
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#include <CGAL/license/GraphicsView.h>
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#include <CGAL/Qt/GraphicsItem.h>
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#include <CGAL/Qt/PainterOstream.h>
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#include <CGAL/Qt/utility.h>
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#include <QGraphicsScene>
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#include <QGraphicsSceneMouseEvent>
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#include <QPainter>
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#include <QStyleOption>
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class QGraphicsSceneMouseEvent;
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namespace CGAL {
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namespace Qt {
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template <typename SL, typename K>
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class StreamLinesGraphicsItem : public GraphicsItem
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{
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typedef typename SL::Stream_line_iterator_2 Stream_line_iterator;
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typedef typename SL::Point_iterator_2 Point_iterator;
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typedef typename K::Point_2 Point_2;
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typedef typename K::Segment_2 Segment_2;
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public:
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StreamLinesGraphicsItem(SL* sl);
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QRectF
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boundingRect() const;
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void
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paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
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void
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modelChanged();
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const QPen& edgesPen() const
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{
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return edges_pen;
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}
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void setEdgesPen(const QPen& pen)
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{
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edges_pen = pen;
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}
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private:
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SL * sl;
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QPen edges_pen;
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};
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template <typename SL, typename K>
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StreamLinesGraphicsItem<SL,K>::StreamLinesGraphicsItem(SL * sl)
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: sl(sl)
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{
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setZValue(3);
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}
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template <typename SL, typename K>
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QRectF
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StreamLinesGraphicsItem<SL,K>::boundingRect() const
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{
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QRectF rect = CGAL::Qt::viewportsBbox(scene());
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return rect;
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}
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template <typename SL, typename K>
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void
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StreamLinesGraphicsItem<SL,K>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget * /*w*/)
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{
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painter->setPen(this->edgesPen());
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QRectF rect = option->exposedRect;
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PainterOstream<K> pos(painter, rect);
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for (Stream_line_iterator sit = sl->begin(); sit != sl->end(); sit++){
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Point_iterator pit = sit->first;
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Point_2 p = *pit;
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++pit;
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for (; pit != (*sit).second; pit++){
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Point_2 q = *pit;
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pos << Segment_2(p,q);
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p = q;
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}
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}
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}
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template <typename SL, typename K>
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void
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StreamLinesGraphicsItem<SL,K>::modelChanged()
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{
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update();
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}
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_STREAM_LINES_GRAPHICS_ITEM_H
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